Quick Answer: How Much Weight Can You Lose on Ozempic and Wegovy?
In clinical trials, patients taking Semaglutide 2.4 mg (Ozempic / Wegovy) lost an average of 15% of total body weight over 68 weeks (e.g. 33 lbs on a 220 lb person). Patients taking Tirzepatide 15 mg (Mounjaro / Zepbound) achieved an average of 20.9% body weight loss over 72 weeks (e.g. 46 lbs on a 220 lb person).
Semaglutide Standard Dosage Titration Schedule
Titration allows the gastrointestinal system to adjust to delayed gastric emptying, minimizing side effects:
Weeks 1–40.25 mgInitiation Dose
Weeks 5–80.50 mgStep-Up Dose
Weeks 9–121.00 mgIntermediate
Weeks 13–161.70 mgTherapeutic
Week 17+2.40 mgMaintenance
Clinical Trial Benchmark Comparison: STEP-1 vs SURMOUNT-1
| Treatment Milestone | Semaglutide 2.4mg (STEP-1) | Tirzepatide 15mg (SURMOUNT-1) |
|---|---|---|
| Month 1 (Week 4) | ~2.5% body weight lost | ~3.5% body weight lost |
| Month 3 (Week 12) | ~6.0% body weight lost | ~8.0% body weight lost |
| Month 6 (Week 24) | ~10.5% body weight lost | ~14.0% body weight lost |
| Month 9 (Week 36) | ~13.0% body weight lost | ~17.5% body weight lost |
| 1 Year (Week 52) | ~14.5% body weight lost | ~19.5% body weight lost |
| Full Course Endpoint | 14.9% (68 Weeks) | 20.9% (72 Weeks) |
Preserving Lean Muscle on GLP-1 Therapy
When losing weight rapidly, up to one-third of the total loss can consist of metabolically active skeletal muscle rather than adipose tissue. To protect lean mass:
- Protein Target: Consume 1.2 to 1.6 grams of high-quality protein per kilogram of body weight daily (e.g. 120–160g for an 80kg individual).
- Resistance Training: Perform compound strength exercises (squats, presses, rows) at least 2 to 3 days per week to signal muscle protein synthesis.
- Electrolytes & Hydration: Consume water consistently with trace sodium, potassium, and magnesium to prevent fatigue and muscle cramping.